ROUGE - Recall-Oriented Understudy for Gisting Evaluation. ROUGE [1]} is a metric evaluation that measures the number of overlapping in n-gram, term sequences, and word pairs for the captions generated. This metric has four versions: ROUGE-N, ROUGE-L, ROUGE-W, and ROUGE-S. ROUGE-L is used in the video captioning task, and it estimates the longest common subsequence (LCS). The first step is to obtain the Recall (\(R_{lcs}\) ) and Precision (\(P_{lcs}\) ) associated with LCS.
